Uputronics preamps are compatible with most USB SDR Dongles such as the RTL USB, Airspy, Fun Cube. You can power them from either bias tee (This item is 100% compatible with the Airspy bias-tee) or a simple USB-C cable (Not Supplied - but we sell a suitable USB Type A to C Cable).
Bias-tee voltage input is 5V.
This unit is filter and pr